附塔支架在管道应力分析中的模拟方式

Simulation of stress analysis of tower support and piping

介绍了附塔支架设置的要点以及管道应力分析中两种常用的附塔支架模拟方式,还介绍了将支架钢结构复合到管道模型中的精确模拟方式,并将上述3种方式得出的管口受力进行比较。针对常用模拟方式计算结果偏差较大的问题,提出了一种新型附塔支架模拟方式。新型方式的计算结果更接近于钢结构复合模型的精确模拟结果。与精确模拟方式相比,新型方式在模拟立管用悬臂支架时,管口受力最大偏差仅为6%;当模拟立管用三角支架模拟时,管口受力最大偏差为20%。新型方式简单方便,既提高了管口受力的精确度,又提高了工作效率,适应了工程的需要。

Here introduced are the main points of arrangement of tower pipe supports,the two common simulation methods and the steel structure’s accurate simulation method in pipe stress analysis. The nozzle’s stress and moments from three simulation methods are analyzed and compared. As the two common simulation methods have large deviations,a new simulation method is proposed,which is simple in modeling and small in deviations. As compared with precise simulation method,the maximum deviation of the nozzle’s stress and moments of the support of the new method is 6%,and the maximum deviation of the nozzle’s stress and moments of triangle support is 20%. Whereas,the new simulation method is simple in modeling and high in accuracy and work efficiency and applicable in project engineering.